$(document).ready(function() 
{ 
	$("#cartResults th:first").append("<input type=\"checkbox\" id=\"deleteAll\">");
	$("#deleteAll").click(function() 
	{ 
		var checked_status = this.checked; 
		$("input[@class=deleteItem]").each(function() 
		{ 
			this.checked = checked_status; 
		}); 
	}); 
});